hotspot/src/share/vm/ci/ciMethodHandle.cpp
author never
Thu, 02 Jun 2011 13:36:11 -0700
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7050554: JSR 292 - need optimization for selectAlternative Reviewed-by: kvn, jrose
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/*
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 * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#include "precompiled.hpp"
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#include "ci/ciClassList.hpp"
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#include "ci/ciInstance.hpp"
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#include "ci/ciMethodData.hpp"
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#include "ci/ciMethodHandle.hpp"
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#include "ci/ciUtilities.hpp"
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#include "prims/methodHandleWalk.hpp"
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#include "prims/methodHandles.hpp"
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// ciMethodHandle
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// ------------------------------------------------------------------
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// ciMethodHandle::get_adapter
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//
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// Return an adapter for this MethodHandle.
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ciMethod* ciMethodHandle::get_adapter_impl(bool is_invokedynamic) const {
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  VM_ENTRY_MARK;
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  Handle h(get_oop());
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  methodHandle callee(_callee->get_methodOop());
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  // We catch all exceptions here that could happen in the method
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  // handle compiler and stop the VM.
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  MethodHandleCompiler mhc(h, callee->name(), callee->signature(), _profile.count(), is_invokedynamic, THREAD);
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  if (!HAS_PENDING_EXCEPTION) {
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    methodHandle m = mhc.compile(THREAD);
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    if (!HAS_PENDING_EXCEPTION) {
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      return CURRENT_ENV->get_object(m())->as_method();
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    }
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  }
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  if (PrintMiscellaneous && (Verbose || WizardMode)) {
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    tty->print("*** ciMethodHandle::get_adapter => ");
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    PENDING_EXCEPTION->print();
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    tty->print("*** get_adapter (%s): ", is_invokedynamic ? "indy" : "mh"); ((ciObject*)this)->print(); //@@
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  }
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  CLEAR_PENDING_EXCEPTION;
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  return NULL;
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}
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// ------------------------------------------------------------------
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// ciMethodHandle::get_adapter
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//
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// Return an adapter for this MethodHandle.
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ciMethod* ciMethodHandle::get_adapter(bool is_invokedynamic) const {
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  ciMethod* result = get_adapter_impl(is_invokedynamic);
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  if (result) {
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    // Fake up the MDO maturity.
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    ciMethodData* mdo = result->method_data();
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    if (mdo != NULL && _caller->method_data() != NULL && _caller->method_data()->is_mature()) {
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      mdo->set_mature();
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    }
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  }
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  return result;
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}
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// ------------------------------------------------------------------
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// ciMethodHandle::print_impl
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//
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// Implementation of the print method.
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void ciMethodHandle::print_impl(outputStream* st) {
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  st->print(" type=");
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  get_oop()->print();
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}